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Machine translation
1. (WO1979000030) FLUIDIZED AIR DEPOLARIZED ELECTRODES AND RELATED APPARATUS AND METHODS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/000030    International Application No.:    PCT/US1978/000030
Publication Date: 25.01.1979 International Filing Date: 03.07.1978
IPC:
C25B 11/00 (2006.01), H01M 12/06 (2006.01), H01M 8/18 (2006.01), H01M 8/22 (2006.01)
Applicants:
Inventors:
Priority Data:
813483 07.07.1977 US
Title (EN) FLUIDIZED AIR DEPOLARIZED ELECTRODES AND RELATED APPARATUS AND METHODS
(FR) ELECTRODES A LIT FLUIDISE POUR ELEMENTS A COMBUSTIBLE UTILISANT L"AIR, ET DISPOSITIFS ET PROCEDES S"Y RAPPORTANT
Abstract: front page image
(EN)Improved oxygen-consuming electrochemical cells are provided with a fluidized-bed oxygen absorber (1), wherein electrolyte-wetted carrier particles (3), especially electronically conductive catalyst particles, are oxygen-enriched, and a substantially bubble-free fluidized-bed cathode (12), wherein the oxygen transported by said carrier particles is electrochemically reduced. Carrier particles comprising activated carbon may provide sufficient surface area per unit weight to assure adequate oxygen transport. An intermediary oxidation-reduction couple may be included in the electrolyte to facilitate these oxygen-absorption and electro-reduction steps. The oxygen absorber (1) may be either separated from the cathode (12) or may form part of the same compartment (28), in which case an oxygen-permeable electrolyte-impermeable membrane (23) must be provided through which oxygen from ambient air may readily pass and be rapidly picked up and transported by the fluidized carrier particles (3). The fluidization of the carrier particles (3) in the oxygen absorber (1) and the cathode (12) may be effected in a moving vehicle by an air interceptor means (6) which utilizes the pressure of air impinging on such a vehicle to effect air flow in the absorber (1) and fluidization within the cathode (12) without recourse to any significant auxiliary power.
(FR)Des elements electrochimiques perfectionnes utilisant l"oxygene comme combustible comportent un dispositif d"absorption d"oxygene (1) en lit fluidise dans lequel les particules porteuses (3) impregnes d"electrolyte, en particulier des particules formes d"un catalyseur semi-conducteur, sont enrichies en oxygene, et une cathode (12) a lit fluidise pratiquement exempte de bulles dans laquelle l"oxygene transporte par lesdites particules porteuses est reduit par voie electrochimique. Les particules porteuses comprenant du charbon actif peuvent presenter une surface specifique suffisante pour assurer un transport adequat de l"oxygene. Un couple d"oxydo-reduction intermediaire peut etre ajoute a l"electrolyte afin de faciliter les etapes d"absorption de l"oxygene et d"electro-reduction. Le dispositif d"absorption d"oxygene (1) peut etre separe de la cathode (12) ou appartenir au meme compartiment (28), auquel cas il faut prevoir une membrane (23) permeable a l"oxygene et impermeable a l"electrolyte e travers laquelle peut passer l"oxygene de l"air ambiant pour etre fixe et transporte par les particules porteuses (3) en lit fluidise. La fluidisation des particules porteuses (3) dans le dispositif d"absorption d"oxygene (1) et dans la cathode (12) peut etre obtenue dans un vehicule en mouvement a l"aide d"un collecteur d"air (6) qui utilise la pression dynamique de l"air sur un tel vehicule pour produire la circulation de l"air dans le dispositif d"absorption (1) et la fluidisation dans la cathode (12) sans le recours a une energie auxiliaire notable.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)